To understand how the suspect in the botched terror attack was able to board a plane, you have to understand how the counterterrorism system that President Obama says failed is supposed to work.
Jill Dougherty takes a step-by-step look at why the U.S. failed to slam the door on the alleged Christmas terror suspect.
From land, water and air, tens of thousands of police officers, federal agents and National Guardsmen are being deployed in an unprecedented effort to make sure the inauguration of President-elect Barack Obama is safe.
If anything were to go seriously wrong at Tuesday's inauguration of Barack Obama, Homeland Security Secretary Michael Chertoff is the man who would manage the crisis response. He is trying to make sure everything goes right.
The federal government's terrorist watch lists are far shorter than have been reported, the secretary of homeland security said Wednesday.
Homeland Security says "no-fly" list numbers are smaller than previously reported. Jeanne Meserve reports.
First, there was "Einstein," the federal government's effort to protect itself from cyber attacks by limiting the number of portals to government computer systems and searching for signs of cyber tampering.
Residents of this hurricane-wrecked island city launched an ill-advised attempt to return to their crippled hometown Wednesday, but instead fumed in hours of gridlocked traffic only to be turned away at the bridge
British prosecutors said Wednesday they were seeking a retrial of seven men accused of plotting to down trans-Atlantic airliners using liquid explosives
British prosecutors said Wednesday they were seeking a retrial of seven men accused of plotting to down trans-Atlantic airliners using liquid explosives disguised as soft drinks
A House representative said Thursday she is requesting an investigation after learning a CNN reporter was put on the federal no-fly list shortly after his investigation of the Transportation Security Administration.
Democratic Rep. Sheila Jackson Lee asks why a CNN reporter was added to the terror watch list.
Travelers from England, France, Germany, Japan and about two dozen other "Visa Waiver" countries will be required to register electronically before boarding a plane or boat to the United States, the Department of Homeland Security said Tuesday.
Travelers who don't need visas to enter the United States will soon be required to register online with the U.S. government at least three days before they visit
Why Texans are up in arms over the Department of Homeland Security plan to build a barrier to illegal immigrants
Texas mayors and business leaders filed a class-action lawsuit Friday alleging Homeland Security Secretary Michael Chertoff hoodwinked landowners into waiving their property rights for construction of a fence along the Mexican border
The Department of Homeland Security unveiled measures Monday aimed at easing the aggravation associated with air travel, including new screening machines, clearer standards for identification, and a new effort to keep travelers from falsely being identified as potential terrorists.
The Department of Homeland Security will bypass environmental and land-management laws to build hundreds of miles of border fence between the United States and Mexico, Homeland Security Secretary Michael Chertoff said Tuesday.
The Bush administration plans to bypass more than 30 laws and regulations in an effort to finish building 670 miles of fence along the southwest U.S. border by the end of 2008
Homeland Security Secretary Michael Chertoff told a Senate panel Tuesday that the government needs to look for new ways to improve airport screening.
Sens. Hillary Clinton and Barack Obama give their views on constructing a fence on the U.S.-Mexico border.
U.S. border officers found a wire between two fences along the U.S.-Mexican border that, when stretched taut, could have seriously harmed or even decapitated Border Patrol agents, Congress was told Wednesday.
Proof of citizenship is now needed at the U.S.-Canadian border. CNN's Jeanne Meserve reports.
Beginning Thursday, U.S. and Canadian citizens who want to enter the United States from Canada must provide border agents with two documents: proof of citizenship such as a birth certificate and a government-issued photo identification such as a driver's license.
Homeland Security Secretary Michael Chertoff talks with CNN's Jeanne Meserve about the showdown over the border fence along Mexico.
Eloisa Tamez said she isn't scared anymore, just determined. "I am not backing down," she said.
The Secretary of Homeland Security said Thursday that he is committed to ending a centuries-old practice that allows United States citizens to cross U.S. land borders simply by saying they are Americans.
The Department of Homeland Security is now collecting scans of all 10 fingerprints from foreign travelers entering the United States at Dulles International Airport, and plans to extend the program to all international airports in the country by the end of next year.
A Halloween party where a Department of Homeland Security worker won praise for a costume of darkened skin and prison garb may stall Senate confirmation of the party's host for a second time.
CNN's John Roberts interviews FEMA Administrator David Paulison.
Federal Emergency Management Agency officials know the agency's performance in the California wildfires will be watched closely for comparisons to its failures in Hurricane Katrina.
As the winds die down, hopes are raised that the devastating fires that have displaced nearly a million can be controlled
Firefighters in Southern California are facing wind-whipped walls of flame from 15 wildfires that have scorched more than 400,000 acres and forced hundreds of thousands of people to flee their homes.
Relentless wildfires roared through Southern California for a third day Tuesday, sending more than half a million residents fleeing with family members, pets and whatever prize possessions they could fit in their vehicles.
A San Diego fire battalion chief tells CNN's Dan Simon that this is the worst fire he's seen in 36 years.
Homeland Security Secretary Michael Chertoff said Tuesday that lessons learned from Hurricane Katrina will be used in the federal government's response to wildfires in Southern California.
The government says they are using lessons they learned from Hurricane Katrina to better respond to the California wildfires.
The federal disaster exercises taking place this week are supposed to prepare us for a real dirty bomb attack. So something is missing
Gonzales announces resignation
It happens immediately after any high-level White House official resigns his or her post -- political observers and Washington reporters go into overdrive over possible replacements.
Bush gives in, Gonzales goes
President Bush on Monday said he reluctantly accepted the resignation of Attorney General Alberto Gonzales, whose "good name was dragged through the mud for political reasons."
If Michael Chertoff is nominated to be the next attorney general, he's likely to face a tough confirmation battle, according to Democratic congressional aides.
Americans may need passports to board domestic flights or to picnic in a national park next year if they live in one of the states defying the federal Real ID Act.
More immigration enforcement?
The Department of Homeland Security announced Thursday it is changing the way aviation security is handled, which will allow it to take over the role of checking passenger information from airlines.
The Transportation Security Administration will deploy special teams to help enhance transit system security in eight cities over the July Fourth holiday, officials said Tuesday.
New York, Washington and a handful of other urban areas are getting more than half of the Homeland Security Department's anti-terrorism grant money, but leaders say that's not enough.
U.S. counterterror officials are warning of an increased risk of an attack this summer, given al-Qaida's apparent interest in summertime strikes and increased al-Qaida training
Travelers setting off for the Fourth of July holiday can expect tighter security at U.S. airports in response to an attack Saturday on the Glasgow airport in Scotland.
Enhanced airport security
Witness: Man covered in flames
U.S. tightens airport security
The United States is boosting security at airports across the country in light of the terrorism scares in Britain in the past two days, officials said.
Two people were arrested in Cheshire, England, in connection with terrorist incidents in England and Scotland, bringing the total number of people in custody to four, Scotland Yard said early Sunday.
Opponents effectively killed President Bush's long-fought and emotion-laden Senate immigration bill Thursday when members voted against advancing the controversial legislation.
Democratic presidential candidate Barack Obama, a U.S. senator from Illinois, has been placed under the protection of the Secret Service, the agency said Thursday.
This week, Congress will return to the immigration debate when it hears testimony from U.S. Homeland Security Secretary Michael Chertoff and U.S. Commerce Secretary Carlos Gutierrez.
Dubai Ports World, the Arab-owned company which set off a furor with its purchase of six U.S. port operations earlier this year, has been cleared to join a federal pilot program to test the methods used to screen U.S.-bound cargo for radiation.
Terrorists planned to concoct an "explosive cocktail" using MP3 players and sports drinks to blow up as many as 10 jetliners bound for the United States, authorities said Thursday.
The former emergency management chief who quit amid widespread criticism over his handling of the aftermath of Hurricane Katrina said he received an e-mail before his resignation stating President Bush was glad to see the Oval Office had dodged most of the criticism.
The Bush administration unveiled Thursday what it said is a new strategy aimed at companies employing illegal immigrants, illustrating it with a crackdown on the German-based firm IFCO Systems.
Migratory birds could carry the avian flu virus to U.S. shores in the next few months, Homeland Security Secretary Michael Chertoff warned Thursday.
The former federal emergency director who resigned after the heavily criticized response to Hurricane Katrina admitted Friday that he should have been more forthcoming about problems with the government's response to the storm but faulted the performance of his former boss, Homeland Security Secretary Michael Chertoff, and called for his resignation.
Homeland Security Secretary Michael Chertoff should be fired for his handling of Hurricane Katrina, former federal emergency management chief Michael Brown said Thursday, accusing Chertoff of lacking disaster management knowledge.
A review of a United Arab Emirates-owned company's plan to take over a portion of operations at key U.S. ports never looked into whether the company had ties to al Qaeda or other terrorists, a key Republican lawmaker told CNN on Wednesday.
It's been one year since Michael Chertoff was appointed head of the Department of Homeland Security, and it's not a happy anniversary. Chertoff spoke before a Senate hearing this week, facing his critics and explaining his agency's lackluster performance during Hurricane Katrina.
While officials debated Sunday what should be done to fix the Federal Emergency Management Agency, Homeland Security Secretary Michael Chertoff warned against drastic changes with hurricane season just a few months away.
Homeland Security Secretary Michael Chertoff took responsibility at a Senate hearing Wednesday for his department's inadequate response to Hurricane Katrina, which "unnecessarily prolonged" the suffering of people along the Gulf Coast.
The response of government at all levels to Hurricane Katrina was "dismal," poorly planned and badly coordinated, showing that more than four years after the September 11, 2001, terror attacks, "America is still not ready for prime time," a House report concludes.
A congressional report to be released this week slams the government's response to Hurricane Katrina, calling it a "failure of leadership" that left people stranded when they were most in need.
Senate Democrats investigating FEMA's response to Hurricane Katrina say they have documented nearly 30 instances in which federal and local government officials gave early reports on Aug. 29 that levees had broken and that New Orleans was flooding, including one report at 8:30 a.m. the day of the storm.
Roving wiretaps and the ability to peek into private medical records are among the provisions of the Patriot Act that will remain intact if the Senate follows the House lead on the bill.
As Hurricane Katrina bore down on the Gulf Coast three weeks ago, veteran workers at the Federal Emergency Management Agency braced for an epic disaster.
As violence, death and misery gripped New Orleans and the surrounding parishes in the days after Hurricane Katrina, a leadership vacuum, bureaucratic red tape and a defensive culture paralyzed volunteers' attempts to help.
Michael Brown may have been the first official to lose his job to Hurricane Katrina, but he might not be the last.
For all his failures, Brown has in some ways been a scapegoat for the incompetence of others.
Federal Emergency Management Agency Director Mike Brown resigned Monday after coming under fire over his qualifications and for what critics call a bungled response to Hurricane Katrina's destruction.
Coast Guard Vice Adm. Thad Allen will replace FEMA director Michael Brown as the on-site head of hurricane relief operations in the Gulf Coast, Homeland Security Secretary Michael Chertoff announced Friday afternoon.
Federal Emergency Management Agency chief Michael Brown was replaced Friday as the man in charge of the Hurricane Katrina federal relief effort.
"I've got this down," Michael Chertoff boasted to aides last weekend as he staved off questions on television about handling the Katrina disaster.
Defending the U.S. government's response to Hurricane Katrina, Homeland Security Secretary Michael Chertoff argued Saturday that government planners did not predict such a disaster ever could occur.
When it comes to assessing the effectiveness of the emergency response to Hurricane Katrina in New Orleans, two divergent -- and incongruous -- views have emerged over more than three long days of misery.
In the wake of last week's terrorist attacks in London, Democrats are asking the Bush administration to spend more money securing the U.S. public transportation system.
The government imposes a lot of burdensome rules and regulations. Only rarely does it get rid of them. When it does, we should mark the occasion. Maybe with the political Play of the Week.
U.S. mass transit systems were put on higher alert after Thursday's bombings in London, with officials in major cities urging Americans to go about their business but be on the lookout for anything suspicious.
President Bush on Tuesday nominated federal appeals court Judge Michael Chertoff to replace Tom Ridge as the secretary of the Department of Homeland Security.
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